Baling press



April 26, 1960 M. L. Hou 2,934,002

BALING PRESS INVENTOR 32 MARK L. HOLT ATTO RN EY April 26, 1960 M. HoLT2,934,002

BALING PRESS Filed Oct. 25, 1956 4 Sheets-Sheet 2 FIG. 3.

MARK L.. Hour FIG. 4.

ATTORNEY M. L. HOLT BALING PRESS April 26, 1960 4 Sheets-Sheet 3 FiledOct. 25, 1956 FIG. 5.

FIG. 6.

INVENTQR MARK L. HOLT BY e i;

ATTORNEY 4 Sheets-Sheet 4 M. L. HOLT BALING PRESS April 26, 1960 Filedoct. 25, 1956 INVENTOR MARK L. HOLT ATTORNEY 7/ -QI I@ BALNG PRESS MarkL. Holt, Lookout Mountain, Tenn., assigner to Chattanooga Welding el:Machine Company, Inc., Chattanooga, Tenn., a corporation of Tennesseeppiication QJctober 25, 1956, Serial No. 618,212

4 Claims. (Cl. 10D-21S) This invention relates to a baling press andmore particularly to a `paling press in which the feeding, compressingand ejecting operations are semi-automatic.

One object of this invention is to provide a baling press in which thefeeding mechanism is not only semi-automatic but more eicient than anyfeeding mechanism heretofore known. Y

Another object of this invention is to provide a hopper for a balingpress designed to cooperate with the tamping door to completely emptythe contents of the hopper into the compression chamber of the balingpress.

Another object of this invention is to provide a baling press hopper fordumping material into the compression chamber, the hopper having anarcuate bottom adapted to continuously engage in dumping position themoving edges of a tamping door pivoted to the compression chamber.

A further object of this invention is to provide a baling press havingnovel latching means for locking the tamping door in closed position.

Another object of this invention is to provide a baling press havingnovel bale ejecting means for lifting, pivoting and discharging acompressed bale outside the compression chamber.

Further objects and advantages of the invention will be apparent fromthe following description taken in conjunction with the drawings,wherein:

Fig. l is a top plan view of the invention with the hopper in loadingposition and the tamping door in open position;

Fig. 2 is an end elevation of the invention disclosed in Fig. l;

Fig. 3 is a section taken along the lines 3-3 of Fig. 1 with the hopperin dumping position and the tamping door in an intermediate position insolid lines and in closed position in dashed lines.

Fig. 4 is a view similar to Fig. 3 with the hopper in loading positionand the tamping door pivoted to closed position;

l' Fig. 5 is a top plan fragmentary view of the closed tamping doorillustrating the latching mechanisms;

Fig. 6 is a section taken along the lines 6-6 of Fig. 5;

Fig. 7 is a section taken along the lines 7-7 of Fig. l;

Fig. 8 is a section taken along the lines 8-8 of Fig. 7 disclosing thelifting operation of the bale ejecting mechanism; and

i Fig. 9 is a view similar to Fig. 8 disclosing the bale ejectinvmechanism in pivoted discharge position.

Referring now to the drawings in more detail, a baling press 10 may bemounted in an open pit 11, as best disclosed in Figs. 3 and 4, or in anyother suitable manner. The baling press 10 is provided with acompression chamer 12 of a generally rectangular shape having an openltop. Pivoted along one side of the compression chamber 12 by hinges 13is a tamping door or cover 14 also of a generally rectangular shape andadapted to pivot to close the opening in the top of the compressionchamber 12.

States Patent' O ice The tamping door 14 is provided with a iiuidpressure cylinder 15 to pivot the door 14 to open and closed positionwith respect to the compression chamber 12. In order to withstand thetremendous pressure built up within the compression chamber 12, thefront wall 16, the rear wall 17 and the end wall 1S of the compressionchamber 12, are heavily reinforced with ribs 19, and the tamping door 14is also reinforced with ribs 20.

Comprising one end of the compression chamber 12 is a ram platen 21,adapted to be moved longitudinally of the compression chamber 12 bymeans of huid-operated ram cylinder 22 as indicated by the dashed linesin Fig. i. Comprising a portion ofthe rear wall 17 adjacent the end wall18 is a ram platen 23 adapted to be moved by means of uid-operatedcylinder 24 transversely across the face of the ram platen 21 when fullyextended as indicated by the dashed lines in Fig. l.

Pivoted by means of hinges 25 to the top of the front Wall 16, is ahopper 26 for receiving a charge of material, such as scrap metal, to becompressed by the baling press 10. The hopper 26 has the shape of acylindrical segment having an arcuate bottom 27 and side plates 28. Theside plates 28 are beveled at 29 to abut against the inclined stops 30mounted on top of and at the rear corners of the compression chamber 12,when the hopper 26 has been pivoted to dumping position, as disclosed inFig. 3. The radius of curvature of the arcuate bottom 27 is equal to thedistance between the pivotal axis of the tamping door hinges 13 and thefront edge 31 of the door 14. The pivotal axes of the hinges 13 and thehinges 25 are parallel and spaced in such a manner that while the hopper26 is being pivoted to its dumping position by means such as liuidcylinder 32, the front edge 31 and end edges 33 of the tamping door 14will continuously engage the cylindrical bottom 27 and the end edges 33of the door will also be in constant engagement with the side plates 28while the door 14 is being pivoted from open to closed position. Such aconstruction provides means for scraping the hopper 26 clean of anyresidual scrap material which might remain after the hopper is movedfrom loading to dumping position.

In order to maintain the tamping door 14 closed While the compressingoperations are being carried out by the ram platens 21 and 23, fluidpressure-operated locking mechanisms 34 and 341 are provided toautomatically lock the door 14 when the door has assumed its closedposition and to keep the door locked until the compressing operationshave been completed. As best disclosed in Figs. 5 and 6, the lockingmechanisms 34 and 341 comprise bolts 35 slidable in bearings 36 mountedon the top and at opposite ends of the door 14. Keepers 37 are mountedon top of the front wall 16 of the compression chamber 12 and belowhopper hinges 25 to receive the bolts 35. Fluid pressure cylinders 3Sprovide means for actuating the bolts 35 to slide into and out ofengagement with keepers 37. Fluid pressure valve 39 is mounted on therear Wall 17 of theV compression chamber 12 to control circulation ofuid through conduitsu-tl and 41 to actuate the locking cylinders 38. Acam 42 is mounted on one of the door hinges 13 and is adapted to engagethe cam follower 43 when the door 14 is closed, the cam follower 43actuating the valve 39 to introduce Huid into the locking cylinders 38and force the bolts 35 into the keepers 37. The bolts 35 are thus lockedby fluid pressure in the keepers 37 throughout the compressingoperations and until such time as controls, not shown, are actuated toreverse the ow of iiuid through valve 39 and lines 40 and 41 to retractthe bolts 35 from keepers 37 to the position of locking mechanism 341 inFig. 5. When the tamping door 14 is open (Figs. l and 2) or is in anyintermediateY position except closed (Fig. 3), the cam 42 is dis- A" Y2.93am

engaged from Ythe cam follower 43 so thatthe valve 39 is actuated tomaintain the bolts 35 in retracted positions.

In order to discharge the compressed bale of material formed in thecompression chamber 12 by the, ram platens 21V and 23, a baie ejectingmechanism 44 (Figs. 7, `8 and,9) o1` novel construction is formed in theend wall 18. y bale ejecting mechanism 44 comprises an L-shaped ejectorVarm 45 having a verticalwear plate 46 forming a portion of the end wall18 Vand a foot wear plate 47 forming a portion of the bottom of. thecompression chamber 12, as disclosedin Fig. 1. Mounted on top of the endwall 18 in bearings 48 isa rotary shaft 49 adapted to be drivenhydro-mater 5t).V Eccentrically mounted on the rotary A to provideclearance for the subsequent pivotal motion of the ejector arm 45. Afterthe ejector arm 45 has been elevated and upon continued rotation of theshaft 49., the lug 53 engages the projection 54 causing the ears 52 andthe ejetcor arm 4S to rotate with the cams 51 andy shaft 49. Whentheejector arm 45 has been rotated to the position of Fig. 9, acompressed bale carried by the plates 46 and 47 is discharged to an areaoutside the baling press 10.v

The operation of the machine is as follows:

vFor the initial operation of the baling press 10, the

operating parts are in the solid-line positions disclosed in` Figs.l and2. The hopper 26 is in itsVv loading position; the ramping door 14 ispivoted upwardto openthe top of the compression chamber 12; the ramplatens 21 and 2 3: me in their retracted positions, ramrplaten 21forming one vend Wall of the compression chamber`12 andY ram platen 23being flush with the rear Wall 17; and the bale ejecting Y'mechanism 44assumes the solid-line position of Fig. 8A with the wear plate 46 beingiiush with the end wall 18 and the wear plate 47 being iiush with thebottom of the compression chamber 12.y In its initial loading position,v the hopper 25 is lled `vvitha charge of material, such as.

scrap metal. The hopper 26 isof such capacity that when iilled, itprovides a complete charge for the compression chamber 12. Controls,vnot shown, are then operated to Vactuate the duid pressure cylinder 32and pivot the hopper 26 upward to its dumping position (Fig. 3) inwhich. materialV from 'the hopper drops into the compression chamber 12.Controls are then operated to actuatethe pressure cylinder and pivot thetamping door 14 down- YWard in an arc so that the front edge 31.willmove contiguous'ly with the cylindrical bottom 2'7, to scrape anyremnants of scrap material from the bottom 27 into the V Y compressionchamber `12.

The

' locked, and the iuid pressure cylinder 15 is actuated to ram cylinder24 is then operated to move the transverse ram platen 23 across the faceof the ram platen 21 and compress the material into a bale in the spaceover the foot plate 47. After the bale is completely compressed, the ramplatens 21 and 23 are withdrawn to their original positions, the lockingmechanisms 34 and 341 are unpivot the door 14 to its open position. Thebale ejecting mechanism 44 is then actuated by starting the hydromotor59 to'rotate the shaft 49 causing theY disc Vcams. 51 to rotateapproximately 186 and lift the ejector arm 45 to the position shown inthe dotted lines in Fig. V8. Continued rotation ofthe shaft 49 causesthe lugs 53 to engage the projections 54 and pivot the ejector arm 45 tothe tilted position disclosed in Fig. 9, thereby discharging the bale ofcompressed metal to an 'area outside the baling press 10.

It will be apparent to those skilled in the art that various changes mayhe madein the invention, without departing rom'the'spirit and scopeVthereof, and therefore the n vention is not limited by that Vwhich isshown in the d raw-Y ings, and described in the specification, but onlyasindicated inthe appended claims.

What is claimed is: Y

1. `A baling press comprising an openY compression chamber, arectangular tamping door`` pivoted along one side of said chamber'toclose said chamber, a hopper pivoted along the -other side ofsaidrchamber for receiving material to be dumped into said chamber, saidhopf per having an arcuate bottom of a radius equal to the distancebetween the pivotal Y'axis-of said door and thek opposite edge of saiddoor, means for pivoting said hopper to dumping position, means forpivoting said door Y so that ,it will continuously engage the bottom ofsaid Y compression chamber 12, the cam 42 engages the cam follower 43,actuating the locking valve 39 which yin turn actuates the lockingcylinders 38 to thrust the bolts 35 into engagement with theirrespective keepers 37. The tamping door 14 remains locked 'in'closedposition until the material within the chamber 12 isV completelycompressed into a bale and it is desired to open the door 14v and ejectthe bale. Control means are then operated to actuate the cylinder 32topivotV the hopper 26 back to its original loading position, asdisclosed in Figs. 1, 2 and 4. Y Theram cylinder 22 is then operated tourge'the ram platen 21 longitudinally of the compression chamber 12 Ytocompress all material Within the chamber against theV hopper 'in dumpingposition and force all material in the hopper into the Vcompressionchamber, means for compressing material in said chamber into a balewhile said door is closed, means for pivoting said hopper to loadingposition,'means for pivoting said door to open po-` sition, and baleejecting means comprising Yan L-shapecl` plate for receiving said bale,there being a recess within the bottom of said chamber forreceivingrthebottom of said plate, a rotary horizontal shaft abovegsaidchamber', a disc cam eccentrically fixed on saidv rotary shaft,` meansfor journaling the Vtop of said bale plate around said cam, a. lugtixedto said cam, fa projection fixed to said plate journal means inthe. path of said lug, means for rotating said shaft through apredetermined angle for lifting said cam plate from said recess, andfor' continuously rotating .said cam until said lug engages saidprojection to Ypivot said plate aboutrsaid shaft'and' to eject said balefrom said chamber."

2. A baling press cornprisingfan.Y open compression chamber, a fluidpressure-operated tamping door pivoted along oneside of said chamber to,close said chamber,

a'hopper pivoted tothe opposite side of said-v chamber.

and adapted to be pivoted from a loading position Yfor receivingmaterial to be dumped into said chamber to a dumping positionV abovesaid chamber, Vthe bottom of said hopper. being shaped toghecontinuously scraped in dumping position by the pivotal movement of saiddoor from open to closed position, means for locking said door in closedposition, means for pivoting said hopper to loading position, a firstfluid pressure-operated ram movable longitudinally into said chambenfasecond uid pressure-operated ram movable into said chamber across theface of said rst ram to form a compressed bale of materialfdumpe'd intosaid chamber by said hopper, meansY for pivoting said doorto openpositionr and bale ejecting means comprising an Lfshaped plate forreceiving said bale, there being a recess within the bottom of saidchamber Yforwr'eceiving Ythe bottom Yof' said plate, a rotary horizontalshaft above saidchamw berrdisc cams eccentrically lixedon said rotaryshaft,

means for journaling Vthe top of'said bale plate around said cams, a lugfixed Vto each cam, projections. xed to;

said plate journal means in the path of said lugs, means for rotatingsaid shaft through a predetermined angle for lifting said plate fromsaid recess, and for continuously rotating said cam until said lugsengage said projections to pivot said plate about said shaft and toeject said bale from said plate.

3. A baling press comprising an open compression chamber, a liuidpressure-operated tamping door pivoted along one side of said chamber toclose said chamber, a hopper pivoted to the opposite side of saidchamber and adapted to be pivoted from a loading position for receivingmaterial to be dumped into said chamber to a dumping position above saidchamber, the bottom of said hopper being shaped to be continuouslyscraped in dumping position by the pivotal movement of said door fromopen to closed position, means for locking said door in closed positionand for unlocking same comprising iluidoperated piston latches andcam-controlled uid valve means associated with the pivotal axis of saiddoor for activating and holding said latches in locked position whensaid door has been pivoted to close said chamber, means for pivotingsaid hopper to loading position, a iirst uid pressure-operated rammovable longitudinally into said chamber, a second fluidpressure-operated ram movable into said chamber across the face of saidiirst ram to form a compressed bale of material dumped into said chamberby said hopper, means for pivoting said door to open position and baleejecting means comprising rotary camoperated means for lifting andpivoting said bale outside said chamber.

4. A baling press comprising an open compression chamber, a fluidpressure-operated tamping door pivoted along one side of said chamber toclose said chamber, a hopper pivoted to the opposite side of saidchamber and adapted to be pivoted from a loading position for receivingmaterial to be dumped into said chamber to a dumping position above saidchamber, the bottom of said hopper being shaped to be continuouslyscraped in dumping position by the pivotal movement of said door fromopen to closed position, means for locking said door in closed positionand for unlocking same comprising a piston-operated bolt mounted on theunpivoted edge of said door, a keeper mounted on the edge of saidchamber to receive said bolt, fluid valve means for circulating uid toactuate said piston bolt, door hinges mounted on said compressionchamber, and cam means mounted on said hinges for operating said uidvalve means to actuate said piston bolt to enter and remain in saidkeeper when said door is pivoted to close said chamber, means forpivoting said hopper to loading position, at least one Huid-pressureoperated ram movable in said chamber to form a cornpressed bale ofmaterial dumped into said chamber by said hopper, means for pivotingsaid door to open position and means for ejecting said bale from saidchamber.

References Cited in the file of this patent UNITED STATES PATENTS1,879,356 Lindemann Sept. 27, 1932 2,371,762 Langford et al. Mar. 20,1945 2,430,973 Boissonnault Nov. 18, 1947 2,643,558 Lindemann et al June30, 1953 FOREIGN PATENTS 311,408 Germany Mar. 19, 1919

